I recently purchased a R2312WTTYSR and wanted to make sure I was not just missing something obvious. Is there no way to connect all 12 drives to the server without also purchasing an additional SAS expander? I would have thought that if the system shipped with 12 bays as an option that the necessary equipment would be on board to connect all 12 drives to the motherboard, and perhaps there is but I am not seeing it. Any corrections or confirmation would be appreciated before I go out and purchase a SAS expander.